1024 x 768 is pretty common, so the restriction to 1000 pixels high is a bit limiting.

Also if you start looking for images of classic movie stars there are all these gorgeous large format analogue publicity shots scanned in at about 3,000 by 4,000 pixels. Seems a shame not to share them!

Out of town at the minute, but alternative is to put the full size images on photobucket or somewhere and use the [img] code to post them here and board software should resize them but clickable for full res.